Windows Installer 4.5 is available - Microsoft Support
Describes the new and improved features of Microsoft Windows Installer 4.5. The article also discusses the issues that are addressed from earlier versions of Windows Installer.
June 11, 2024—KB5039217 (OS Build 17763.5936)
Windows 10, version 22H2 update history; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651) June 25, 2024—KB5039299 (OS Build 19045.4598) Preview
Office Help & Training
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什么是 TPM? - Microsoft 支持
TPM 或受信任的平台模块通过安全地创建和存储加密密钥来提高电脑的安全性。 TPM 2.0 是使 Windows 11 更加安全的关键部分。
激活 Office - Microsoft 支持
如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365
Windows help and learning
Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.
使用系统文件检查器工具修复丢失或损坏的系统文件 - Microsoft 支持
本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。
Create an email message in Outlook - Microsoft Support
Create an email message in new Outlook. From within new Outlook, off the ribbon, select New > Mail, or press Ctrl + N. If multiple email accounts are configured in new Outlook, From:<accountname> appears at the top of the new message.To change the account you want the message sent from, select the dropdown and choose another account.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Microsoft 365 admin, Outlook on the web, Outlook.com, New Outlook for Windows
Troubleshoot Windows Media Player Errors - Microsoft Support
Learn how to troubleshoot Windows Media Player errors. Explore resources for general help with Windows Media Player.
Office Help & Training
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